Fan-tremolo for reed-organs



(No Model.)

A. H. HAMMOND. FAN TRBMOBO FOR REED ORGANS- No. 892,331; Patented Nov. 6, 1888.

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ANDREXV H. HAMMOND, OF 'WOROESTER, MASSACHUSETTS.

FAN TFiEitiGLG FOR REED -GRGANS.

SPECIFICATION forming part. of Letters Patent No. 392,331, dated November 6,1888.

Application filed Scptemherfli, 1888. Serial No.286,185.

To all whom, it may concern..-

Be it known that 1, ANDREW H. HAMMOND, a citizen of the United States, residing at \Vorcester, in the county of \Vorccster and State of Massachusetts, have invented certain new and useful Improvementsin Fan-Tremolos for Reed-Organs; and I do hereby declare that the following is a full, clear, and exact description thereof, which, in connection with the drawings making a part of this specification, will enable others skilled in the art to which my invention belongs to make and use the same.

vMy invention relates to a fan-tremolo used in reed-organs for the purpose ofimitating the human voice; and it consists in certain novel features of construction of the motor-head and stop-valve of the tremolo.

The object of my invention is to simplify as much as possible and lessen the cost of making the motor-head and the stop-valve of a fantremolo, and to so construct the same that the stop-valve shall be combined directly with and form a part of the motonhead, and I carry out my invention in the manner to be hereinafter fully described.

Referring to the drawings, Figure l is a side view of a fan-tremolo embodying my improvements, the motor-head being shown in section. Fig. 2 is a bottom view of the motor-head end of the fan tremolo shown in Fig. 1. Fig. 3 is a section on line mm, Fig. 1, lookingin the direction of the arrow a, same figure. Fig. 4 is a section on line y, Fig. 1, looking in the direction of arrow 1), same figure; and Figs. 5, 6, and 7 are detail views of the valve and opcrating-wire.

In the accompanying drawings, 1 is the basepiece, upon which are supported and secured at one end the post or standard 2, and at the other end the motor-head 8, between which the fan 4 is supported to turn in the ordinary manner. lVithin the motor-head 3 is the motor-wheel 5, connected with the fan at, and of the ordinary construction and operation.

One of the features of my invention is the novel construction of the motor-head 3. It is made out of a solid block of wood, a tool adapted for the purpose boring out the central part, which forms a chamber, 8, for the motor-wheel 5. A circular cap piece or cover,

(No model.)

7, with a notched edge, (see Fig. 1,) is fitted to the central opening, extending upon the outer surface of the block, thus forming an inclosed chamber for the motonwheel. A hole, 8, extends through the lower part of the block or motor-head 3, through which the air passes out when the motor-wheel 5 is operated in the ordinary manner. A second hole, 9, also extends through the lower part of the motor-head, through which the air passes into the chamber in the rnotor-head,to operate the motor-whcel 5 and the fan l, connected therewith. The passage of air through the hole 9 is controlled by the valve 10.

The construction and arrangement of the valve 10 and the combination of the same with the motor-head is another feature of my invention.

Heretofore the valve controlling the en trance of air to operate the fan-tremolo has been located upon the outside of the motorhead, either upon the exterior surface, where it is entirely exposed or at some point under the wind-chest, where a more complicated mechanism is required to reach and operate it. In my improved construction the valve is located within and forms a part of the motorhead. It is thus entirely concealedfrom view when the fan-tremolo is in position, andis operated directly by a lever extending to the stop. The lower edge of the block or motorhead 3 is bored out around the hole 9, forming a shallow chamber, 11, in which is fitted the valve 10, in this instance consisting of a disk of leather, 10, extending over the lower edge of the hole 9, and secured upon one end of an arm, 10 pivoted in the chamber 11 by means of a wire, 12, which extends through a hole and has its bearing in the lower part of the motor-head 3. (See dottedlines, Fig. 2.) The wire 12 is preferably provided with fins 12 where it extends through the valve-arm 10', to prevent the same from turning thereon. The outer end, 12 of the wire 12, which extends upon the outside of the motor-head, is bent so as to be engaged by the lower end of thclever 13, which operates the valve 10. The lever 13 is pivoted upon the inner face of the mo tor-head by a screw, 1st, and is connected at its upper end with the stop in any ordinary man- The valve 10 is kept closed when the tending in a groove in the lower part of the arm of the valve 1.0. (See Fig. 3.)

The advantages of my improved construction of the motorhead out of one block of wood and of the arrangement and construction of the valve controlling the passage of air into the motor-head will be apparent to those skilled in the art.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a fan-tremolo, the combination, with the motor-head, of a valve controlling the passage ofair into said motor-head, located within the exterior surface of said motor-head, sub stantially as shown and described.

2. In a fan-tremolo, the motor-head, within which is inclosed the motor-wheel, made out of one block of wood, and provided with a cover or cap-piece, substantially as shown and de scribed.

3. In a fan-tremolo, the combination, with the motor-head, made out of one block of wood and provided with a cover, of a valve controlling the passage of air into the motor-head, located within the block forming the motorhead, substantially as shown and described.

4. In a fan-tremolo, the combination, with the frame, fan, and motor-wheel, of a motorhead made out of one block of wood, with the central portion bored out and provided with a cap-piece to form a chamber for the motorwheel, substantially as shown and described.

5. In a fan-tremolo, the combination, with the motor-head, of a valve, 10, for controlling the passage of air into said motor-head and located within the same, and a wire, 12, provided with fins 12, for pivoting said valve, and a bent arm, 12", for engagement with the stoplever, substantially as shown and described.

6. In a fan-tremolo, the combination, with the motor-head 3, made out of one block of wood,with a central chamber, 6, therein, and holes 8 and 9 leading from said chamber, and a cover, 7, for said chamber,of a valve, 10, for controlling the passage of air, located and pivoted within the exterior surface of the block of which the motor-head is made, substantially as shown and described.

7. The combination, with the motor-head 3, having a chamber, 11, in one edge thereof, of a valve, 10, located within said chamber, and pivoted upon a wire, 12, having its bearings in said head, and one end extending outside thereof for engagement with the stop-lever,all constructed and arranged substantially as shown and described.

ANDREW H. HAMMOND. Witnesses:

JOHN C. DEWEY, r CLARENCE M. SOHOFIELD. 

